Stone-sawing machine.



Patenteol Oct. 16, 1917.

2 SHEETS-SHEET I.

A. M. ROSSI.

STONE SAWING MACHINE.

APPLICATION FILED MAR. 21, 1917.

1,42 9%, Pal-tented Oct. 16,1917.

' 2 SHEETS-SHEET 2.

T m w 4? I nib AUGUSTUS M. ROSSI, 0F BARBIE, VERMONT.

STONE-SAWING MACHINE.

Specification of Letters Patent. atentedl (lot. 16, 1191 W,

Application filed March 21, 1917. I Serial No. 156,348.

chines, and more specifically to a machine adapted to handle relativelylarge blocks of stone and conveniently saw and cut them into smallerpieces.

One of the objects of the present invention is to provide a simple andpractical stone sawing machine of the above general character which willbe reliable and efficient in use and operation. A further object is toprovide a machine of the above character which will be substantiallyautomatic in its operation. A further object is to provide a strong anddurable apparatus of the above character which will be relativelyinexpensive to construct and install.

Other objects will be in part obvious from the annexed drawings and inpart indicated'in connection therewith by the following analysis of thisinvention.

This invention accordingly consists in the features of construction,combination of parts and in the unique relations of the members and inthe relative proportioning and disposition thereof, all as morecompletely outlined herein.

To enable others skilled in the art so fully to comprehend theunderlying features thereof that they may embody the same by thenumerous modifications in structure and relation contemplated by thisinvention, drawings depicting a preferred form have been annexed as apart of this disclosure, and in such drawings, like characters ofreference denote corresponding parts throughout all the views, in whichFigure 1 is a plan View of the complete apparatus;

Fig. 2 is an end elevation view, partly in section, of the completeapparatus;

Fig. 3 is adetail view showing the carriage feed mechanism;

Fig. 4 is a detail fragmentary view showing a portion of the saw blade;

Fig. 5 is a detail fragmentary elevational view showin a part of thecarriage feed.

In order t at a clearer perception of the present invention may be hadit may be stated that the apparatus is designed primanly for handlingrelatively large blocks of stone, and comprises a pair of rotatable sawbladesmounted in a suitable frame and adapted to operate upon a block ofstone earned by two cars positioned at opposite sides'of the plane inwhich the saw blades lie, the cars being automatically fed as the sawblades revolve.

Referring now to the drawings in detail, and more particularly to Fig.1, 10 denotes four vertical uprights connected by two transverse members11 and 12, and two longitudinal members 13.and 14. The parts aresuitably braced and connected to provide a rigid and substantialstructure adapted to carry the saw blades and the motive means fordriving the blades, as well as the automatic carriage feed.

Below the framework, which may be con sidered a hollow trestle, are twotracks 15 and 16 adapted to support independent cars 17 and 18 uponwhich a block of stone 2() is adapted to rest. As indicated in Fig.v 2,these cars are slightly spaced apart, and lying in a vertical planetherebetween are two rotatable saw blades 21 and 22, mounted uponsuitable shafts 23 and 24, respectively, the-lower one of which dipsinto the usual shot and water pit 19 as indicated. I These saw bladesare mounted in the same vertical plane but their centers are slightlyoifset, so that the lower edge of the blade 22 projects below ahorizontally disposed tangential line to the blade 21, thus insuring acomplete cutting of the stone as it is passed thereby. In order toobtain this staggered relation of the saw blades the shaft 23 is mountedupon one side of the transverse member 11 while the other shaft, 24, ismounted upon the opposite side, as shown clearly in Fig. 1. Both ofthese shafts are provided at their ends with beveled gears 25, meshingwith similarly shaped gears 26.

One of these gears 26 is carried by a stub shaft 27 while the other iscarried by a vertically disposed shaft 28 at the opposite side of theupright 10. Interposed between' the gears 26 is an idler shaft .30provided with a pinion 31 meshing with suitable pinions 32 on the stubshaft 27 and main shaft 28, thus to obtain the desired rotation of thesaw blades. i

It will be noted by reference to Fig. 2, that the upper shaft 2-1 withits respective saw blade is mounted in suitable adjustable ions 38,carried by vertical shafts 40 connected with the bearings 35. This shaft36 may be rotated in any desired manner through the medium. of wheel 41at its end.

In order to obtain the desired feed of the cars 17 and -18 with respectto the rotation of the saws, each car is provided with a rack member 45projecting downwardly from one side thereof, as shown in Fig. 5. Theserack members mesh with suitable pinions 46 mounted upon transverseshafts 47, as shown in Fig. 1. Each shaft is of course mounted insuitable fixed bearings 48 and is provided at its end with the bevelgears 50 meshing with a second bevel gear 51 on shaft 52, providedintermediate its ends with a worm 53 meshing with gear 54, carried by avertical shaft '55, the opposite end of which shaft is provided withsuitable bevel gearing 56 connecting with a transverse shaft 57extending across the top of the frame work.

Fast and loose pulleys 58 are mounted uponthis shaft andconnected bymeans of a belt 60 with a motor 61 seated at the top of the framework. Asuitable belt-shift 62 is provided as well as a clutch member 63, uponthe shaft 57. This clutch member is interposed between the driving meansand pawl and ratchet mechanism 64, as shown more clearly in Fig. 3,which is connected by means of an eccentric drive 65 with the drivenshaft 70. This construction permits the cars to be moved rapidly fromone end of the track to the other by releasing the clutch 63 andconnecting the fast pulley with the motor 61, in order to obtain theinitial positioning of the stone with respect to the saw blades. Afterthis initial positioning or removal of the cut stone, if the case besuch, the belt is shifted to the loose pulley, the clutch 63 connected,and thereafter the cars are automatically driven through themechanism'shown in Fig. 3, to feed the stone progressively as the sawsrotate.

Any suitable formof power may be used for driving the several parts butit is believed that a motor 66 mounted upon the framework, as shown inFig. 1, and connected by means of a belt 67 with a driven pulley 68 upona shaft 70 mounted at the top of the frame is preferable. This shaft 70carries a bevel gear 71 meshing with a bevel gem- 72 upon the shaft 28.The motor control for both motors 61 and 66 may be located at anyconvenient spot.

While the saw blades may be of any desired construction suitable forsawing stone, there is indicated in Fig. 4 a. preferred embodiment inwhich the blade proper 75 is provided with notches 76 uniformly arrangedabout its periphery, in "which are mounted tooth members 77, eachcarrying two teeth 78, connected with the body of the saw by means ofrivets or other suitable form of holding means 80.

The operation and method of use of a de 21 and 22 will be rotated in thedesired di-' rection. As soon, however, as the saws start to rotate thepawl and ratchet mechanism illustrated in Fig. 3 will come intooperation to feed cars 17 and 18 forwardly, so that the stone isactually engaged by the saw blades and is progressively fed as theblades out into the stone. The peculiar relation and position of the sawblades permit a clean even cut of the stone straddling the two cars 17and 18. After the block has been cut through the driving motor 66 isstopped and the feed motor 61 started, after properly poisitioning thebelt upon the fast pulley and releasing the clutch 63, to re move thecars 17, 18, backwardly or forwardly, as desired.

It is thus seen that the present invention provides a simple andpractical apparatus of the above general character adapted toaccomplish, among others, all of the objects and advantages herein setforth.

Without further analysis, the foregoing will so fully reveal the gist ofthis invention that others can by applying current knowledge readilyadapt it for various applications without omitting certain featuresthat,

' from the standpoint of the prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this invention,and therefore such adaptations should and are intended to becomprehended within the meaning and range of equivalency of thefollowing claim. r 1

Having thus described my invention What I claim as new and desire tosecure by Letters Patent is:

In a stone sawing apparatus, in combination, an inverted U-shapedframework, a saw adapted to revolve in a vertical plane between thelegs, a pair of cars adapted to travel upon tracks on the opposite sidesof the saw, a shaft at the top of said framework, two sources of powerassociated with the framework and adapted to be connected with saidshaft means connecting said shaft and saw whereby they rotate togethermeans connecting said shaft with the cars for moving the cars withrespect to the saw and clutch mechanism for operatively connecting onesource of power with said shaft for rotating the saw and feeding the carproportionally or to connect with the other source of power to rapidlyposition the car with respect to the saw without rotating the saw. Intestimony whereof I affix my signature in presence of two witnesses.

AUGUSTUS M. ROSSI. Witnesses:

S. HOLLISTER JACKSON, EDNA G. JENNINGS.

